baber/WOPTO huggingface dataset:
Patent JP-S5679599-A (JP)
Title: Loud speaker
Inventor: ITOU SUKETAKA
IPC: H04R3/02
Filed: 1979-11-30
Abstract: PURPOSE:To limit howling, by inserting a variable gain amplifier (VCA) in the transmission line of voice signal to detect the VCA output and controlling the gain of VCA with the detected output. CONSTITUTION:The audio input to a microphone 1 with a normal state is amplified at a VCA 5 and amplifier 2 to be fed to a speaker 3. Although a part of the output of VCA is detected at a detection circuit 6, the gain of VCA is not almost changed. With this state, when the loop gain closes to 1 and the oscillation starts, the detection circuit 6 outputs the control voltage Vc in response to the sinusoidal wave of specific frequency. Thus, the gain of VCA is lowered and reaches the control region, the howling is kept constant and balanced. With this condition, when voice is input to the microphone 1, this voice signal is fed to the detection circuit through VCA, and the control voltage Vc is not almost changed against this voice signal.
Patent JP-H0448432-A (JP)
Title: Binder for magnetic recording medium
Inventor: FUJII NORIKI
IPC: G11B5/702
Filed: 1990-06-14
Abstract: PURPOSE:To improve dispersibility for fine particles of magnetic powder when the powder is dispersed by preparing the binder comprising copolymers of specified amts. of vinyl chloride, epoxy group-contg. vinyl and N-substd. maleimide as the binder. CONSTITUTION:The binder consists of copolymers of vinyl chloride, epoxy group-contg. vinyl and N-substd. maleimide. The amt. of vinyl chloride is 59 - 98 wt.%, which is decided by the following reason. If the amt. is small, solubility of the binder for an org. solvent decreases, while with large amt. of vinyl chloride, the obtd. copolymers become hard with low flexibility. The amt. of epoxy group-contg. vinyl is 1 - 30 wt.%. If the amt. is small, dispersibility of the magnetic powder in the copolymers decreases, while with large amt., the solubility to an org. solvent decreases. The amt. of N-substd. maleimide is 1 - 40 wt.%. With small amt. of this maleimide, dispersibility of the magnetic powder in the copolymers, heat resistance of the copolymers and wearing resistance of the magnetic layer decrease, while with large amt., the obtd. layer becomes brittle. Thereby, fine particles of the magnetic powder can be uniformly disperse.
Patent JP-S6218031-A (JP)
Title: Ion beam etching equipment
Inventor: SATO YASUE
IPC: C23F4/00
Filed: 1985-07-17
Abstract: PURPOSE:To improve the operating rate and the productivity of etching equipment by a method wherein periodically repeated application of positive or negative voltages to ion leadout electrodes is accomplished for the neutralization of ions on the wafer surface with little loss in the ion application time. CONSTITUTION:An ion leadout electrode unit 10 is constituted of an upper electrode 10a and lower electrode 10b. A first power source 15 is connected to the upper electrode 10a that is in contact with an ion source 2 and a second power source 16 is connected to the lower electrode 10b. The first power source 15 applies, alternately and periodically, a positive voltage V1 lasting for a prescribed time period t1 and a negative voltage -V2 lasting for a constant time period t2. With the positive voltage V1 on, positive ions are lead out of the plasma present in the ion source 2, accelerated downward toward a wafer 13, and etches the wafer 13. Next, with the negative voltage -V2 on, electrons are lead out of the plasma present in the ion source 2, accelerated downward, and land on the wafer 13. The electrons react with the positive ions in the wafer surface for the realization of electrical neutrality.
Patent JP-H025064-A (JP)
Title: Electrostatic recording sheet
Inventor: YAMAUCHI KEIJI
IPC: G03G5/02
Filed: 1988-06-24
Abstract: PURPOSE:To obviate the exfoliation of a toner when recording is executed at a low temp. down to 0 deg.C and to allow sharp color recording with high contrast by specifying the glass transition temp. of a dielectric layer resin to 20-40 deg.C. CONSTITUTION:A conductive layer and the dielectric layer are successively provided on at least one face of a base. The exfoliation of the toner is liable to arise at the low temp. of <=10 deg.C and is hardly generated at 20-30 deg.C and relates closely with the glass transition temp. of the dielectric layer resin. The reason thereof is estimated to lie in the weak adhesive strength of the dielectric layer resin having high Tg and the toner particles at a low temp. The dielectric layer resin having 20-40 deg.C Tg is consequently used. The sharp recording of high contrast is obtd. in this way without generating the exfoliation of the toner even under the low temp. conditions down to 0 deg.C in case of executing recording of double colors particularly with a color electrostatic plotter.
Patent JP-H10329913-A (JP)
Title: Improved folding type conveyor
Inventor: SONODA MAKOTO
IPC: B65G13/12
Filed: 1997-05-30
Abstract: PROBLEM TO BE SOLVED: To smoothly convey heavy weights and reduce the vibration and noise at the time of conveyance by providing the means for locking the right and left conveyor units at the desired interval, and supporting a new intermediate slender conveyor unit in parallel on the same plane as that of the right and left conveyor units on interval adjusting rods. SOLUTION: Lock screws 23 are loosened, interval adjusting rods 11 are moved to the right or left, toggle joints 8-17 are bent or extended, and the right and left conveyor units 1, 1 are adjusted at the interval corresponding to the width of seedling boxes to be conveyed. A roller shift adjustment is made so that the rollers 3 of an intermediate conveyor unit 1' are located at the middle positions of the longitudinal intervals of the rollers 3 of the right and left conveyor units 1, 1. Multiple conveyor units S thus adjusted are properly connected by connecting frames 4 and arranged at the prescribed position, and conveyance objects such as seedling boxes are conveyed. Considerably heavy weights are safely and surely conveyed on the right, left, and intermediate conveyor units 1, 1, 1'.
Patent JP-H06340074-A (JP)
Title: Ink jet recording apparatus
Inventor: HIROTA TETSUO
IPC: B41J2/125
Filed: 1993-06-02
Abstract: PURPOSE:To control an ink droplet speed constant even with respect to the change of environmental temp. by calculating the rising temp. of a recording head from memory data on the basis of a drive time and a non-drive time and controlling the drive voltage of the piezoelectric element of the recording head on the basis of the temp. of the recording head calculated from the environmental temp. and the rising temp. CONSTITUTION:Environmental temp. is read by an environmental temp. sensor 28 and stored in a register to read a wait time (OFF) and a printing time (ON) by a timer counter 29 to store the respective times in a CPU 24 or an RAM 25. The sum total of rising temps. until now becomes the total temp. rise of a recording head 26. The environmental temp. is added to the total temp. rise to be set to the estimate temp. of the recording head 26 and the drive voltage of a piezoelectric element is determined on the basis of the estimate temp. The printing time (ON) is measured at a recording position by the timer counter 29 and the waite time (OFF) is measured at a non-printing place. The heating and radiation of the recording head are estimated on the basis of two measured times.
Patent JP-S5278702-A (JP)
Title: Extraction of noble metal from wast catalyzer
Inventor: YOTSUYA TAKAHISA
IPC: B01J23/90
Filed: 1975-12-26
Abstract: PURPOSE: Waste catalyzer is treated with the mixed solution of hydrogen peroxide and hydrochloric acid under existence of fluorine compound. Thereby, Pt contained in waste catalyzer is extracted, separated easily at high recovery rate. 
     COPYRIGHT: (C)1977,JPO&Japio
Patent JP-H0448662-A (JP)
Title: Mount method of light emitting diode/microchip, light emitting diode/microchip device and light emitting diode/ microchip
Inventor: KUMA SHOJI
IPC: H05K3/30
Filed: 1990-06-14
Abstract: PURPOSE:To acquire mount method of a thermally stable light emitting diode/ microchip of good heat dissipation properties by forming a small through hole on a wiring substrate and by injecting a fixed amount of organic substance of good heat conductivity from a rear after soldering mount of a microchip. CONSTITUTION:Six bare chips 17 are mounted on an SiC stem 14 which is provided with two electrode surfaces 15, 15 with a boundary of an insulating part 16 on a surface. After the bare chip 17 is connected in parallel by a wire bonding line 18, it is formed to a rectangular solid by mold casting by transparent epoxy resin. A microchip 1 which is produced by forming electrode terminals 2, 2 for soldering at both edge surface which cross a light emitting surface 3 at right angles is mounted on a wiring substrate 11 which is provided with wirings 5, 5 on a surface and with a through hole 12. After mount by soldering 6, a cap 7 is charged with silicon grease 13 which is injected through the through hole 12 from a wiring substrate rear. As a result, a microchip and a wiring substrate can be closely bonded and thermally stable mount of good heat dissipation properties can be realized.
Patent JP-H09315218-A (JP)
Title: Integrated circuit for direction indicating lamp blinking device
Inventor: SUEOKA TOSHIRO
IPC: B60Q11/00
Filed: 1996-05-29
Abstract: PROBLEM TO BE SOLVED: To prevent the wrong operation of a direction indicating lamp blinking device due to the chattering signal by forming a noise filter of a resistor and a capacitor provided in a terminal of a comparator. SOLUTION: A lamp disconnection detecting unit 213 detects voltage lowering in both ends of a current detecting resistor 22, and in the case where a level of the voltage lowering at the predetermined level or less is detected, disconnection of direction indicating lamps 1R, 1L is judged, and outputs the disconnection detecting signal at a '1' level to an oscillating unit 212, and this lamp disconnection detecting unit 213 is formed of a comparator 213A, a resistor 213B for noise filter, a capacitor 213C and a reference voltage source 213D. A terminal of a non-reverse input terminal of the comparator 213A is provided with the resistor 213B and the capacitor 213C so as to structure a noise filter, and eliminates the noise, which intrudes the comparator 213A.
Patent JP-H0321647-A (JP)
Title: Resin composition and resin-sealed electronic device produced by using the composition
Inventor: HOZOJI HIROYUKI
IPC: H01L23/31
Filed: 1989-06-19
Abstract: PURPOSE:To obtain the subject composition effective in improving the adhesivity a filler to a matrix resin and the high-temperature strength of a molded article and useful for a resin-sealed semiconductor device by compounding a specific amount of spherical inorganic filler coated with a silane coupling agent. CONSTITUTION:A spherical inorganic filler coated with a silane coupling agent (preferably vinyltriethoxysilane) is produced by spraying a slurry containing 100 pts.wt. of a spherical inorganic filler (preferably spherical silica of 0.5-100mum diameter), preferably 0.1-3 pts.wt. of the silane coupling agent and a solvent (e.g. water) into a reduced-pressure atmosphere heated at or above the boiling point of the solvent. The objective composition can be produced by compounding >=70wt.% of the spherical inorganic filler with a matrix resin (e.g. epoxy resin), a curing agent, a cure accelerator and, as necessary, a plasticizer, etc. A resin- sealed semiconductor device having improved crack resistance is produced by using the composition as a sealing material.
Patent JP-S5857670-A (JP)
Title: End detector of record player
Inventor: YAMADA JIROU
IPC: G11B3/095
Filed: 1981-09-30
Abstract: PURPOSE:To detect assuredly the end of a record without receiving any effect of eccentricity of the record, by delivering a return signal after detecting the mean extent of shift of a tone arm. CONSTITUTION:A position sensor 1 which detects the movement of a tone arm in the form of a pulse detects the position pulse by intermitting the optical path to a hotodetector from a light emitter with the revolution of a shutter disk for example. A pulse counter 2 which counts the position pulses sent from the sensor 1 delivers a pulse when it exceeds the prescribed reference value. In a performance mode, the counter 2 counts the number of position pulses which are delivered within the reference period that is decided a timer 3 whose set value is switched by the number of revolutions of the disk. Then a return signal is delivered when the count value of the counter 2 exceeds the set value. Thus the tone arm returns to its original position.
Patent JP-H08114853-A (JP)
Title: Data imprinting device of camera
Inventor: NAKANO HIROHISA
IPC: G03B17/28
Filed: 1995-06-22
Abstract: PURPOSE: To provide a data imprinting device capable of distinctly imprinting data at low cost as a data imprinting device suitable for a camera capable of switching a picture size to a standard size or a panoramic size. CONSTITUTION: A transmission type liquid crystal display body 50 where an imprinted character string for standard photographing 51a and an imprinted character string for panoramic photographing 51b are arranged in parallel is used, and in the case of photographing in the standard size, the character string 51a is irradiated with light by a data imprinting optical system for standard size 90. In the case of photographing in the panoramic size, the character string 51b is irradiated by an optical system for panoramic size 70. By providing two character strings 51a and 51b in one display body 50, the device whose number of parts is reduced and which is suitable for mass-production is provided. An intermediate seal can be provided between the character strings 51a and 51b on the display body 50, whereby a cell gap is kept to be uniform and the data is more distinctly imprinted.
Patent JP-H05345883-A (JP)
Title: Photosensitive protecting sheet
Inventor: KUSANO TETSUYA
IPC: C09J7/02
Filed: 1992-06-16
Abstract: PURPOSE:To obtain a sheet having a photosensitive tacky agent layer obtained by copolymerizing an iminosulfonate monomer with a functional group- containing water soluble monomer on a substrate surface and capable of protecting a semiconductor wafer surface and exhibiting excellent tackiness during polishing and removable with water. CONSTITUTION:The sheet used for surface protection, etc., of a semiconductor wafer is obtained by providing a photosensitive tacky agent layer consisting of a copolymer containing 5-70wt.% iminosulfonate monomer expressed by the formula [R<1> is unsaturated hydrocarbon having one polymerizable double bond; R<2> and R<3> are 1-10C alkyl or (substituted)phenyl and at least either one of R<2> and R<3> is (substituted)phenyl and R<2> and R<3> may together be bonded] and 95-30wt.% water soluble vinyl based monomer having at least one kind of functional group among carboxyl group, amino group and hydroxyl group, etc.
Patent JP-H0447530-A (JP)
Title: Signal processing circuit and optical information processor
Inventor: KANDA SHIGETO
IPC: G11B7/09
Filed: 1990-06-14
Abstract: PURPOSE:To detect a focusing and/or tracking error signal with constant sensitivity by controlling the resistance value of a variable resistor comprising a current/voltage converter so that the sum of output voltages can be kept constant. CONSTITUTION:Differential amplifiers 1-4 and field effect transistors (FET) 41-44 connected to optical sensors 6-9, respectively comprise the current/voltage converters, respectively, and the focusing error signal and the tracking error signal can be obtained by inputting the output voltages V1-V4 of the converters to prescribed circuits. Also, the output of the differential amplifiers 1-4 are added via resistors R5, and an addition voltage is inputted to a differential amplifier 5, and the differential amplifier 5 takes difference between the addition voltage and a reference voltage Vr, and outputs a control signal. The resistance values of the FETs 41-44 can be controlled by the control signal, and the output of each converter goes to the one normalized by a total photoelectric current value. In such a manner, it is possible to detect the focusing and/or tracking error signal with constant sensitivity.
Patent JP-H0325824-A (JP)
Title: Impregnated cathode
Inventor: WATABE ISATO
IPC: H01J1/28
Filed: 1989-06-21
Abstract: PURPOSE:To prolong the service life while preventing exhaustion of Sc in a Sc system impregnated cathode having a thin film layer including Sc on the surface thereof by adding the supply source into the above thin film surface. CONSTITUTION:An impregnated cathode 1 is formed in such a manner that a porous base body having a porosity of 28%, which is prepared by pre-sintering in hydrogen and sintering in vacuum a press-moulded tungsten powder, is infiltrated in hydrogen with an electron emitting material composed of 4BaO-Al2O3- CaO. On the surface of the cathode 1, there is formed a compound thin film layer 5 which is prepared by adding a mixture or compound of Re, Os, Ru, Pt, W, Ta, Mo or the like including Sc onto a thin film layer compound of an oxide including W and/or Sc, and therefore it is possible to easily supply, on the surface of the cathode 1, Sc which is a molecular layer component of (Ba:Sc:O) necessary for improvement in an electron emitting characteristic.
Patent JP-2000348132-A (JP)
Title: Bar code reading method
Inventor: HATANAKA HARUO
IPC: G06K7/10
Filed: 1999-06-03
Abstract: PROBLEM TO BE SOLVED: To accurately read a bar code with narrower width by providing an inflection point calculation step, a decision step for deciding the width of each element according to the distance between inflection points, a step for decoding the bar code according to the decision result of the decision step, etc. SOLUTION: Projection data are obtained (S15) by performing a projection process for adding luminance data along the lengths of the respective points of a bar code. In the data, inflection points where unevenness of the waveform varies are obtained and it is decided that an element is white when the waveform of the projection data between the inflection points is convex and black when concave (S16 to S18). Then a computer decodes the bar code by referring to a previously stored code table based upon the CODE-39 standards according to the thickness and color of each element of the bar code decided in the previous process and displays the result on a display (S19).
Patent JP-H04347920-A (JP)
Title: Method and device for digital data interpolation
Inventor: SAKAKI MASANORI
IPC: H03H17/02
Filed: 1991-06-27
Abstract: PURPOSE:To improve the calculation precision by dividing the product between a digital data string and a coefficient into three parts and applying direct addition in the case of a set of specific data and applying the Euler conversion method to obtain the sum otherwise. CONSTITUTION:A limited number of successively coming input digital data are stored in a data memory 2, and a preliminarily calculated numerical value is stored as coefficient data in a coefficient memory 3. A control circuit 1 preliminarily divides a small number of sets of specific data and the other sets from each other and successively reads out input digital data AK from the data memory 2 and successively reads out coefficient data CK from the coefficient memory 3 and inputs these data AK and CK to a product calculating circuit 5 as one set. This product calculating circuit 5 calculates a product D, between input data AK and coefficient data CK, and the product is directly sent to an adder 8 in the case of sets of specific data commanded by the control circuit 1 but is sent to an Euler total sum circuit 7 through a difference calculating circuit 6 in the case of the other sets of data.
Patent JP-H06303116-A (JP)
Title: Logical output driver
Inventor: MAAKU ANSONII JIYOONZU
IPC: H03K17/04
Filed: 1993-06-28
Abstract: PURPOSE: To hold the through rate of an output voltage at a proper value corresponding to a load capacity by constituting a driver of a bias generator, a current mirror, and an output stage and making the driver programmable and holding the conductance of the output stage in a selected fixed value. CONSTITUTION: A programmable bias generator 100 is connected to a current mirror 200, and this mirror 200 is connected to a fixed conductance output means 300. An N channel element 210 controls the gate voltage of a current mirror element P220 so as to control the drain voltage of a P channel element P210. The source of the element P220 is connected to the output stage 300. The generator 100 is connected to an output driver 320 through the current mirror 200 with a current gain independent of the process, the temperature, and the voltage. The output driver 320 outputs a programmable driver logic signal which has desired characteristics independent of the process, the temperature, and the voltage.
Patent JP-S5582076-A (JP)
Title: Alarm wrist watch with calendar
Inventor: MATSUURA EIICHI
IPC: G04B23/02
Filed: 1978-12-14
Abstract: PURPOSE: To display visually the waiting of alarm and alarm stopping on the dial plate, by providing the watching window at a part of the dial plate and locating the alarm display member in interlocking with the movement of the crown under the window.  
     CONSTITUTION: The watching window 3a is placed at a part of the dial plate 3, and the alarm display member 12 in interlocking with the movement of the crown 1 is located under the window 3a. This alarm display member 12 displays the state of alarm waiting and alarm stop visually on the dial plate, allowing to clearly distinct the position of the alarm stop 1a and the alarm waiting position 1b due to the difference of projected amount of the crown 1. 
     COPYRIGHT: (C)1980,JPO&Japio
Patent JP-S6422451-A (JP)
Title: Continuous casting mold for preform for rolling beam
Inventor: HANSU HAINRIHI HARUTOMAN
IPC: B22D11/04
Filed: 1988-06-27
Abstract: PURPOSE: To enable the adjustment of a web height, web thickness and flange thickness of a preform body for rolling a beam by arranging straight-end range and curving end range to the outside in each side wall of a mold and enabling the adjustment of the side walls in the horizontal direction to casting direction. CONSTITUTION: The mold is formed of two side walls 1, 2 and two end walls 3, 4 arranged between these side walls 1, 2. In order to form a casting chamber for preform body 5 to roll the beam, the side walls 1, 2 have the curving end ranges and the straight end ranges. These end ranges are arranged in the reverse direction and the chamber for flanges 6, 7 of the preform body 5 is formed together with the end walls 3, 4 arranged between these side walls. The side walls 1, 2 of the mold are mutually paralleled and can adjust in the horizontal direction to the casting direction along the directions of the arrow marks 17, 18. By this constitution, the height of the web 9 in the preform body 5 can be changed.
Patent JP-H0670113-A (JP)
Title: Still picture transmission system
Inventor: TAWARA TOMONORI
IPC: H04N7/00
Filed: 1991-06-27
Abstract: PURPOSE:To secure a storing function in a still picture transmission system for the history of a received still picture file. CONSTITUTION:A portable still picture transmitter 1 is connected to a fixed still picture transmitter 2 via a telephone circuit 5. A magneto-optical disk device 4 where plural still picture files are recorded is connected to the transmitter 2. A work RAM of the transmitter 1 stores 10 names of still picture files including the latest one received from the transmitter 2. These file names are successively shown for reference on a display 12 by means of the numeral keys 14 provided on a control panel of the transmitter 1. The numbers are given to the shown file names in the order of reception. Then a still picture file request is issued by means of a function key 13 provided in the control panel with a prescribed file name shown on the device 12. Thus the still picture file can be received again in response to the relevant file name.